Process oe preparing ethylene dichlohib



G. 0. CURIVIE, Jn. PROCESS 0F PREPARING ETHYLENE DICHLORID. APPLlATloN FILED JuNEs, Isls. RENEwED DEC. 12.1917.

1,315,542. Patentedsept. 9, 1919.

@Hoz ms wneoo UNITED sTATEs PATENT oEEIoE.

eEoIteE o. cUnME, Jn., 0E PITTSBURGH,

PENNSYLVANIA, AssIGNon, BY ivIEsNE ASSIGNMENTS, T0 UNION CARBIDECOMPANY, 0F NEW YORK, Y., A CORPO- NATION orv'IEGINIA. Y

rnooEss or PREPAEING' naiaie.

Application led June 3, 1916, Serial No. 101,637.

- To all whom it may concern.' e

However, under all conditions, this reaction does not run rapidly and smoothly, with formation of a pure end-product. I have found that an especially favorable set of conditions for bringing about this reaction is obtained when conditions are chosen such as to present the chlorin in the liquid phase l to the action of the ethylene in either the dll gaseous or liquid phase. 'The chlorin can be lquefied by suiiicient compression or by suficient reduction of temperature, or b both expedients applied at once; similar y the ethylene can be liquefied if desired.

M present invention consists, therefore, in t e rocess for preparin ethylenedichlorid omethylene and c lorin which is in the liquid condition, with the ethylene in either gaseous or liquid condition'.

The accompanying drawing, which is made a art hereof, illustrates an apparatus such as as been found ap ropriate for the practice of said process, a though the successful application of the process is not de'- pendent on using this exactapparatus and must be varied as gaseous or liquid eth lene is used with the liquid chlorin. Said rawmg shows the apparatus as used for liquid ch orin andl gaseous ethylene.

The said apparatus consists of a vessel 10, p with an inlet pipe 11 for gaseous ethylene leading nearly to the bottom of said vessel, andan inlet ipe 12 for the liquid chlorin, leading intoillle upper portion of said vessel, and an outlet pipe' 13, with a valve 14,

leading from the bottom of said vessel. An ethylene sup ly tank 15, compressor 16a chlorin su p comprising a battery of cylinders 1 and a compressi?? 13 @Qmlls the apparatlll.

erting su v ,by reducing its temperature -to the point of ETHYLENE DIoHLoEIn.

,A Specification of Letters Patent. Patented Sept, 9, 1919-.I

Renewed December 12,191?. serial No. 206,848.`

`illustrates an arrangement suchas has been found practicable, but may be varied in any appropriate manner, for example the process` easily lends itself to an arrangement for continuous operation.

The operation consists in leading gaseous ethylene, at a pressure greater than the vapor pressure exerted by the chlorin in the vesse 10 at the temperature used, through the vessel 10 containing chlorin, which has been brouht in to a liquid condition by excient external pressure on 1t, or

liquefaction, or by both expediente applied simultaneously, or by dissolving it in some other liquid from which the ethylenedichlorid can later be Separated, or by dissolving it in ethylenedichlorid itself. This, then permits of a complete and rapid union olf the ethylene and the chlorin immediately upon introducing the former gas intothe liquid layer 15, 'ving pure ethylenedichlorid. The ethylelne is continuousl added, bubbling through the liquid c lorin,

.which is continuously supplied. If both gases are pure, no aseous substance escapes; the pure ethylenedichlorid, a liquid, is drawn oif through outlet pipe 13 controlled by valve lll.V i.

If' it'should be considered desirable, the ethylene may also be .reducedto the liquid 'condition by exerting suiiicient pressure' on it, or by coolin it tothe point of liquefaction, or by bot expediente,V applied simultaneously. `-The liquid ethylene thus obtained may be added to the liquid chlorin, or the liquid containing chlorin, and, as is the case above, unites at once with the chlorin toy form pure ethylenedichlorid, free from higher chlorinated roducts.

Naturall as soon ast e process has proceeded a s ort' time, the liquid content of vessel 10 contains both liquid chlorin--in case .such was used at the start-and ethylenedichlorid which are mutually soluble in each other.. This gives the same result as though a mixture of ethylenedichlorid and liquid chlorin were used at the start, and, indeed, such may be done with equally good results, or an'inert liquid, mixed with the' liquid chlorin, may be used which later can `be separated from the ethylenedichlorid..

Having *has ,fully .escribes er Said i11- vention, what I claim as new anddesire to secure by Letters Patent, is:

ich consists in assmg gaseous ethylene into chlorin in liquid condition,

l substantially as set forth.

3. The chlorid which consists in leading gaseous Y ethylene through a vessel containing liquid rocess of making ethylenedi-` chlorin," thepressure of the ethylene being greater `than the vapor pressure of the ohlorin, substantially as set forth.

In witness whereof, I have hereunto set myrhand and seal at Washington, District of Columbia, this twenty-ninth day of May, A. D. nineteen hundred and'- sixteen.

.GEORGE o. CURME, JR. [1.5.]

Witnesses:

` E. W. BRADFORD,

CHAs. E. RIoRDoN. 

